Note 1: These adapters only work with standard magwells, if you have a firearms with extended magwell (e.g. 10/22 Tactical Semi-Automatic Rifle) these adapters will not work for you.
Note 2: We advise against using the black 30 round Remington 597 magazines. These magazines have a design defect which causes the follower to bind. The clear 30 round magazines, and Pro-Mag 597 magazines work best. You should also follow our posted magazine break in procedure.
Product Update From SBI 2019-07-17: We have made numerous alterations to the product during the last month of down time. We have tightened the tolerances within the adapter, changed printer configuration to produce a stronger part, and improved overall quality. We have also added an adjustment screw to the rear of the adapter. This can be used to snug the adapter inside the Ruger 10/22 rifle.